Cars are over 100 years old too.

These solutions were only invented because of that. If everyone could just copy it, nobody would take the trouble of trying to come up with a solution. Also, not only wealthy people can afford this, pretty much everyone who can afford a table saw can also afford it. A pretty good illustration of the advantages of capitalism if you ask me…

Imagine how much you would be able to mess with people if you had telekinesis.

It has a (smaller) european part.

You want me to drink actual Dihydrogen Monoxide? No way!

Just because people with years of experience with something don’t have to think about it, doesn’t mean it’s intuitive.

As a non-native speaker, I don’t find it intuitive at all, even though I don’t have to think about it anymore. And as you can see by their post, OP didn’t find it intuitive either.

As a non-native speaker, referring to a single teacher as “they” is not very intuitive (although correct)…

That is actually, by law, NOT stealing, thats called fraud.

Imagine several people building a sand castle at the beach. Anyone can join, just start building your own little tower and then connect it to the main castle (this is instances explained). You can also invite anyone to work on your specific part of the castle and build the tower with you (users joining an instance).